A string declared using var myString = 'string text' is implicitly a string object, and you can still use string object methods such as myString.length

<script type="text/javascript">
		var myText = prompt('Please enter a string to capture to a variable: ', '');
		document.write("Type of input: " + typeof(myText) + "<br />Length of string: " +
			myText.length + "<br />");
		var myObj = new String(prompt('Please enter a string to store in a string object: ', ''));
		document.write("Type of input: " + typeof(myObj) + "<br />Length of object: " +
			myObj.length + "<br />");
		var myEmail = "Bill.Gates@microsoft.com";
		document.write('The @ character occurs at position ' + (myEmail.indexOf('@') + 1) +
		' in the email address: ' + myEmail + "<br />");
		document.write('The domain of that email address is: ' + 
			myEmail.substring(myEmail.indexOf('@')+1, myEmail.length) + "<br />");
		document.write('Email address: ' + myEmail + ' and after toLowerCase ');
		document.write(myEmail.toLowerCase( ) + "<br />");  		
		
	</script>